Re: gecko questions

whoops, slight typo I meant 8,000mfd cap , I typed in an extra
nothing (0) that made a big difference!!!!!!!!!
thanks guys for your support. I am not sure what resistor I used last
time for current setting (they all look the same to me when they are
laying on the bench!!!!!)
thanks
Mark

--- In CAD_CAM_EDM_DRO@y..., "Tim Goldstein" <timg@k...> wrote:
> The current setting for the drives will not change with a higher
voltage. So
> if the current setting was correct before it will be fine now.
>
> 80,000 mfd is a way big cap. It will not hurt anything, but you
could use a
> lot smaller one. There is no real need to get the ripple down to
tiny
> percentage unless you have a brother in law in the cap business you
are
> wanting to support. While I do not questions the calculations that
Mariss
> has in his white paper on cap values, my experience is that you can
make a
> usable power supply with a whole lot less filtering.
>
> Tim
> [Denver, CO]
>
> ----- Original Message -----
>
> > Morning all!,
> > I am upgrading my transformer to a much bigger one and just want
to
> > run by you experts some questions! i have been running gecko 201's
> > on my old transformer(18 vac/26vdc)with I suspect was not setup
> > efficiently. I have now got a multi tapped large transformer
which I
> > am going to use (34 v ac/47.6v dc). my motors are 34 Vexta 4.5
> > amp .047 ohms ( 2 volt?) 8 wire series connected running three
axis.
> > Can some one reassure me on
> > a: the current set resistor value ,thinking 22k ?.
> > b:the capacitor rating for the power supply ( i have read the
white
> > paper and still not sure)thinking 80 volt 80000mfd ?
> > please help so i can go buy the bits as I want to do this
correctly
> > this time ( it worked fine last time but could it have been
better?)
> > thanks
> > Mark
> >